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US 6,142,439 AGranted
Lifting apparatus
AssigneeAramaki Technica Co., Ltd.
InventorNoriyoshi Aramaki
Life of this patent
Estimating the term…
Abstract
A lifting apparatus for installation or maintenance of an elevated installation in order to simplify installation work and perform maintenance work at a lower place. The lifting apparatus comprises a fixed part to be fixed at a high place, and a lifting part which comprises an installation to be installed at the fixed part and a power source for at least moving up the lifting part and which is suspended from the fixed part to move up and down.
Claims16
A lifting apparatus, comprising:
- a fixed part to be fixed at a height above a surface;
- a lifting part including:
- an installation to be installed at the fixed part;
- a frame;
- an electric motor on the frame that is rotatable driven in only one direction to move the lifting part upwardly relative to the surface;
- and
- a battery on the frame for supplying electric power to the electric motor;
- wherein the lifting part being suspended from the fixed part by a wire cable to move up and down relative to the surface;
- a locking device for locking the lifting part to the fixed part;
- the wire cable being winched by driving the electric motor through a speed reducer on the frame;
- wherein the lifting part is downwardly movable by the self-weight of the lifting part toward the surface by releasing the locking of the lifting part to the fixed part.
8 more elements
A lifting apparatus, comprising:
- a fixed part to be fixed above a surface;
- a lifting part attachable to an installation to be installed at the fixed part, the lifting part including:
- a frame;
- a motor on the frame that is rotatably driven in only one direction to move the lifting part upwardly relative to the surface;
- and
- a power source on the frame for powering the motor;
- wherein the lifting part is suspended from the fixed part by a wire cable to move upward and downward relative to the surface;
- a locking device for locking the lifting part to the fixed part above the surface;
- the wire cable being raised by the motor when the motor is rotatably driven in the one direction,
- wherein the lifting part is downwardly movable by the self-weight of the lifting part toward the surface by releasing the locking of the lifting part to the fixed part.
7 more elements
A lifting apparatus, comprising:
- a fixed part to be fixed above a surface;
- a lifting part attachable to an installation to be installed at the fixed part, the lifting part including:
- a frame;
- a motor on the frame that is rotatably driven in only one direction to move the lifting part upwardly relative to the surface;
- and
- a power source on the frame for powering the motor;
- wherein the lifting part is suspended from the fixed part by a wire cable to move upward and downward relative to the surface;
- a locking device for locking the lifting part to the fixed part above the surface;
- the wire cable being raised by the motor when the motor is rotatably driven in the one direction;
- and
- the motor is rotated reversely by the self-weight of the lifting part through a resistance due to a speed reducer when the locking device is unlocked.
8 more elements
A lifting apparatus, comprising:
- a fixed part to be fixed at a height above a surface;
- a lifting part that is releasably locked to the fixed part, the lifting part including:
- an installation to be installed at the fixed part;
- a frame;
- an electric motor on the frame, the electric motor is drivable in only one direction to move the lifting part upwardly relative to the surface;
- and
- a battery on the frame for supplying electric power to the electric motor;
- wherein the lifting part being suspended from the fixed part by a wire cable to move up and down relative to the surface;
- the wire cable being winched by driving the electric motor through a speed reducer on the frame;
- the lifting part is downwardly self-movable toward the surface by releasing the locking of the lifting part to the fixed part.
7 more elements
Dependencies are inferred from the claim text.